Which of the following events happens first in the development of a new organism? A. A zygote undergoes mitosis.
B. A sperm fertilizes an egg to form a zygote.
C. A blastocyst implants into the uterine wall.
D. A morula is formed.

Answers

Answer 1
Answer:

It's C. A blastocyst implants into the uterine wall.


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Chlorophyll traps _____ from sunlight.a. oxygen
c. hydrogen
b. energy
d. glucose

Answers


The correct answer is b - energy

Chlorophyll is a green pigment that has light absorbing ability. Light from the sun contains energy  in the form of  photons.

The photons are trapped by chlorophyll and are used to provide power to split water molecules in the leaf in the process of photosynthesis.

Because chlorophyll is a pigment that absorbs light, it is called a photoreceptor. By absorbing light energy, chlorophyll is vital in the photosynthesis and without it, green plants would not be able to get power to run photosynthesis.




What is the speed, in m/s, of a wave on a cord if it has a wavelength of 4m and a period of 0.5 s?

Answers

Velocity= frequency* wavelength
            Frequency= 1/periodic time
                             = 1/ 0.5s
=2 Hz
Velocity= 2Hz*4m
Velocity= 8m/s

Which organism would be the secondary consumer in this food chain?leaf insect bat cat

Answers

A bat would be the secondary consumer in this food chain as it is the second most predator like animal. 

A lack of some basic biological requirement such as water, which produces a drive to obtain that requirement, is known as the?

Answers

Drive reduction approach to motivation, this theory states that when an individual has been deprived of biological resources such as energy, water or sleep, others. They tend to result to impulse or drive. These basic needs arise an action to obtain this need is required. 

Observation of Diffusion Rate in Relation to Cell SizeAs you have observed, cells are small. Consider your little toe: it is made of about 2-3 billion
cells! A newly-made cell will grow, but once it reaches a certain size it will divide to form two
new cells rather than growing bigger. Why is this? Why aren't you made of a few dozen, or a
few hundred cells, instead of trillions? Why don't single-celled organisms like amoebas and paramecia grow
as big as a human? In this lab, we will investigate this question using model cells.

Answers

Explanation:

new cells rather than growing bigger. Why is this ?

There are two main reasons why cells divide rather than continuing to grow larger and larger: ... If the cell grows too large, it will have trouble moving enough nutrients and wastes across the cell membrane. Cell Division. Cell division is the process by which cellular material is divided between two new daughter cells.

Why aren't you made of a few dozen, or a

few hundred cells, instead of trillions?

if the cell grows beyond a certain limit, not enough material will be able to cross the membrane fast enough to accommodate the increased cellular volume. When this happens, the cell must divide into smaller cells with favorable surface area/volume ratios, or cease to function. That is why cells are so small.

Why don't single-celled organisms like amoebas and paramecia grow

as big as a human?     again The important point is that the surface area to the volume ratio gets smaller as the cell gets larger. Thus, if the cell grows beyond a certain limit, not enough material will be able to cross the membrane fast enough to accommodate the increased cellular volume.

i belive this is just the introduction to the project but here

Which of the following describes how the septum in the heart affects blood flow? a.) It pumps blood out of the heart to the rest of the cardiovascular system when heart muscles contract. b.)It separates the heart's left and right sides to keep oxygenated and deoxygenated blood from mixing. c.)It separates the heart's upper and lower chambers to keep incoming and outgoing blood from mixing. d.) It accepts blood into the heart from the rest of the cardiovascular system when heart muscles relax.

Answers

A Septum separates the heart's left and right sides to keep oxygenated and deoxygenated blood from mixing.

What is a septum?

The septum of the heart is the wall that divides the left side of the heart to the right side.

The septum that divides the upper chambers of the heart is called the atrial septum.

The ventricular septum divides the lower chambers of the heart.

Thus., the correct option is b.) It separates the heart's left and right sides to keep oxygenated and deoxygenated blood from mixing.

Learn more about septum

brainly.com/question/6318363

the answer is actually b