This procedure is called In Vitro Fertilization (IVF)
A.Both are driven by the environment's goals.
B.Both are driven by human goals.
C.Both occur over several generations.
D.Both select for favorable traits in a species.
Answer: The air spaces in the spongy layer of a leaf connect with air through stomata in the epidermis of the leaf.
Explanation:
The cells in the spongy layer of the leaf contain less chloroplast but act as storage for product of photosynthesis like sugars,amino acids and bases.
The air spaces in the spongy layer connect with air through stomata in the epidermis of the leaf. The air spaces in spongy layer allow diffusion of carbondioxide and oxygen and stomata which is a small pores in the epidermis allow carbondioxide and oxygen to enter and leave the leaf.
Answer:
B. Hominins evolved an opposable thumb that enabled hands to grasp objects.
Explanation:
Prehistoric hominids evolved opposable thumbs earlier than bipedal walking. The opposable thumbs have been critical during evolution because this position enables the digits to grasp and handle objects.
2.
3. Each cell makes a complementary DNA strand.
4. The cells separate.
Which is the missing step for the process of conjugation described?
Answer:
2. The Fusion of cell membranes and transfer of single strand of plasmid DNA of donor cell.
Explanation:
When one bacterium transfers its genetic material through direct contact to others. The bacterium transfers its genetic material called donor cell and one serves it called recipient cell.
There are mainly four steps in this process-
1. Connecting sex pilus to recipient cell by donor cell.
2. The Fusion of cell membranes and transfer of single strand of DNA to the recipient cell.
3. Each bacterium cell makes a complementary DNA strand.
4. Both bacterium cells separates.
Carrying capacity in biology refers to the maximum population size that an environment can sustain indefinitely without the environment becoming degraded. It's the number of individuals that the available resources within a particular environment can support. If the population exceeds this number, the environment may become degraded.
The carrying capacity of a population in biology refers to A) Its maximum population size that an environment can sustain indefinitely without significant degradation of that environment. In other words, carrying capacity is the number of individuals that a specific environment's resources can support without causing negative impacts on the environment. For instance, if there are too many deer in a forest and food resources become scarce, the forest has reached its carrying capacity for deer. If the population continues to increase, the environment will become degraded, and the health of the deer population will decrease. Therefore, the accurate answer is A) Its maximum population size to remain stable.
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